Answer: plummets

AnswerCrossword Clue
PLUMMETSNose-dives
PLUMMETSDives
PLUMMETSSounding leads.
PLUMMETSDrops straight down.
PLUMMETSTakes a dive
plummetsDecrease rapidly in value or amount
plummetsPLUMMET, to drop straight down
plummetsFall or drop straight down at high speed